Tap the icon on their iPhone home screen, this loads a Mood Hear splash page, which loads the Home Screen.
(The Home Screen is Screen 1 that needs designing.) This is made up of three sections, two of which are hidden at any given time. Genres, which, if you tap on, reveals a set of boxes with Genre names. Elements, which, if you tap on, closes Genres and reveals a set of smaller boxes with essentially sub-genre names. And Mixes, which if you tap on, closes whatever was open, and reveals 'mixes' comprised of elements, with their names. Tapping on one of those names reveals three dials or slider bars to adjust how much of each element is in there adding up to 100%.
At the bottom left is a 'music meter' that tells you how many days of ad-free music you have left,(tapping on this takes over the screen with a detailed look at the music meter - Screen 2 that needs designing) a play/pause and skip button (which tapping on slides away the Genre/elements/mixes screen and reveals album art), and a button that says Map.
Tapping the map button reveals a map of nearby Mood locations. Tapping one of those locations reveals information and directions on how to get there.
That's about it.